Epiphytal. _Pseudobulbs_ clustered, narrow oblong, over two inches long, erect, shining, tetragonal, the surface furrowed, diphyllous. _Leaves_ elongate-lanceolate acuminate, nervose, somewhat leathery in consistence. _Scape_ radical, pale green, bearing a raceme of four or five flowers, furnished with ovate pale green bracts at the base of the pedicels. _Flowers_ about two inches across, of a peculiar and distinctive character; _sepals_ ovate-lanceolate, the lateral ones deflexed, bright green, with about seven wavy close-set longitudinal bands of dark umber-brown, the bars having a tendency to break up into lines of spots, wholly green outside; _petals_ spreading, of the same form and colour as the sepals; _lip_ unguiculate, auricled on both sides in front of the claw, obovate with a broad rounded apex, undulated margin, and furnished behind the disk with a callus or ruff of thirteen crimson plaits or ribs. _Column_ thick, greenish, galeate, with two projecting linear auricles. Zygopetalum Burkei, _Reichenbach fil._, in _Gardeners’ Chronicle_, N.S., xx., 684. This new species is a very pretty free-blooming plant. It belongs to a genus that is well known to plant growers, and amongst the species of which there are some grand decorative plants; indeed, we generally find some of these plants wherever there is a stove, even if Orchids generally are not professed to be grown. _Zygopetalum Mackayi_, _Z. maxillare_, and _Z. Gautieri_, are the most useful. Of late some new hybrids have been introduced, namely, _Z. Sedeni_ and _Z. Clayi_, which latter will be found figured at Plate 50 of our second volume. The species now under notice was introduced by the Messrs. Veitch & Sons, of Chelsea; and in their fine collection it bloomed last November, and was exhibited at South Kensington, gaining a First Class Certificate. It will be found to be a most useful species for general cultivation. We believe Messrs. Veitch’s to be the only plant that has yet flowered in this country. _Zygopetalum Burkei_ is a native of Demerara, and was found, it appears, by Sir Robert Schomburgk some forty years since, but had not been introduced until recently sent home by Messrs. Veitch’s collector, Mr. Burke, after whom it is named. It is an evergreen species, with long narrow erect ribbed four-cornered pseudobulbs, and light green foliage; the sepals and petals are green, spotted and barred with brown, and the lip is white, with a crest of crimson stripes on ribs. It blooms during the autumn months and lasts for several weeks in bloom.